Wire-stitching machine.



Patented Feb. 6, 1917.

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1. PAGLIARUL.

WIRE STITCHING MACHINEL. I APPLICATION nuzo JUNE 22.

1914' Patented Feb. 6, 1917 5 SHEETS-SHEET J. PAGLIAHUL.

WIRE STITCHING MACHINE.

APPLICATION FILED JUNE 22. 1914.

Patented Feb. 6, 1917.

5 SHEETS-SHEET 3.

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J. PAGLIARUL.

WIRE STITCHING MACHINE, APPLICATION FILED JUNE 22. I914.

1,215,312. Patented Feb. 6,1917.

5 SHEETS-SHEET 4- J. PAGLIARUL.

WIRE STITCHING MACHINE.

APPLICATION FILED JUNE 22, 1914.

1,215,312. 7 Patented Feb. 6,1917.

5 SHEETS-SHEET 5- 7/0maae/ 1W m: mwms Fsrsns(JO-1FNUYO-LIYNDNWASNINOIOIL n JOSEPH PAGLIARUL, OF CHICAGO, ILLINOIS,ASSIGNOR T0 JOSEPH E. SMYTH, OF CHICAGO, ILLINOIS.

WIRE-STITCHING MACHINE.

Specification of Letters Patent.

Patented Feb. 6, 1917.

Application filed June 22, 1914, serial No. 846,432

To all whom it may concern:

Be it known that I, JOSEPH PA GLI ARUL, a citizen of the United States,residing in the city of Chicago, countyof Cookand State of Illinois,have invented certain new and useful Improvements in Wire-StitchingMachines, of which the followingis a specification. r

My invention relates to improvements in wire stltchlng machines andrefers more particularly to wire stitching machines employed forstitching together sheets of paper forming books of varyingthicknesses.-

Among the salient objects of the invention are, to provide animprovedwire stitching machine in which'the legs of the stapleare at alltimes of equal length, whatever may be the length of the staple beingused;- to provide a construction-of the class described in which thecutting-oil mechanism may be adjusted to cut ofi? varying lengths ofwire to form the staple, while with'the same motion the wire feed isadjusted to feed forward a wire having an increase or decrease in lengthequal to twice'the amount ofinovement of the adjustable cutting device;to provide an improved adjustment for the wire-feeding mechanism whichwill permit of an extremely fine adjustment of the'forward feed of thewire, while at the same time the ratio between the adjustment of thecutting mechanism and. the wire-feeding mechanism is unchanged toprovide an improved cutting-ofi' mechanism which will permit of theready removal; and replacement of parts subject to Wear ordisarrangement; to provide an improved construction to positively holdthe-wire whilethe-staple length is being cut oil to provideimprove'dmechanism for paying 0E the raw wire from the feed spool while'said feedspool is subjected to a positive braking effect independent of theamount of wire on said spool; to provide an improvement in the formingmechanism which will prevent the improper accidental cuttingofi of theend of the wire blank due to lack of straightness of the wire; and, ingeneral to provide an improved wire stitching machine of the charsFigure l is a .front elevation of the ma- Fig. 3 is an'enlargedfragmentary view 'chineasa whole showing the principal op- V of aportion of Fig. 1 showing the cutting.

Fig.4 is "a reverse view of a portion of Fig. 1 showing the staplelength adjusting mechanism; Fig. 5 is a fragmentary section taken alongthe-line 55 of Fig. 3; Fig. '6 is a View in elevation of a portion ofthe cutting off unit removed from the machine; 1

Fig. 7 is a sideview of Fig. 6;

i Fig. 8 is a section taken-along the line Fig. 9 is a section'taken inplan along the line 9 9 of Fig. 4;

Fig. 10 is a sectional view taken along the line 1010 of Fig. 1; andFig. 11; is an undersideview of Fig. 10

partly in. section taken along the line 1111..

Referringto the drawings, 1 represents the frame of the machine to thefront of which' is secured the flat upstanding casting 2 upon which aremounted the various mechanisms'to be described. 3 is the stitchingsaddle of the machine below which is arranged the leg-bending orcrimping mechanism, which is not shown but may be of any particular typedesired, as it forms no part of my present invention. The machine as awhole is driven by means of a pulley 4c towhich'iskeyed the shaft 5journaled in the frameI and the casting 2 and projecting through thelatter. 7

To the upperpart of the casting 2 is secured an upstanding bracket arm6which carries the spool. 7 with its associated braking mechanism thespool itself being journaled upon al'horizontal pin 8 fixed in the 7upper end of said bracket 6. The spool is maintained in position on thepin 8 by means of a star-shaped spring washer. 9 which is prevented fromcoming ofi the end of the pin S by means of .a cotter pin '10. Thiswasher, however, is not intendedto provide any great amount of brakingeiiect, which is taken care of by the brake-lever 11 which carries aleather pad 12 long enough to bear against each flange of the spool. Thebrakefixed in the oblique arm 14 of the bracket 6, and the lower end ofthis lever is operated upon by one end of the spring-actuated pivotedarm 15. The latter is pivoted upon a pin 16 also fixed in the bracket 6and is urged in a direction so as to twist the arm to apply the brake bymeans of a coil spring 17 one end of which is secured to the pin 16 andthe other end engagesthe horizontal portion of the arm. This arm isformed from. suitable sheet metal and the end remote from the bracket isbent down and shaped so as to form acircular track for the wire andV-shaped in cross-section. The wire is prevented fromjumping out of thetrack by means of several wire eyes 17 secured in the center of the arm.The radius of the circular portion of the arm is such as to deliver thewiresubstantiallyin a straight tangential line to the wire-straighteningmechanismdesignated as a whole 18. it will be noted that the amount oftension or frictional drag imparted to the wire by the spool take-oilmechanism just described, is determined by the tension of the spring'17,and is independent of any friction due to the rotation of thespool onits spindle. When the wire is pulled into the machine by the feedingmechanism, the end 19 of the lever 15 swings down, due to the pull ofthe wire, and releases the brake 12 slightly permitting the spool torotate.

The feeding forward of the wire is accomplished by the cam-operated feedlever 42. This lever 42 is mounted upon a horizontal pivot pin 43 iixedin the front of the main frame casting 2 and is normally forced in aclock-wise direction by means of a comparatively stiff coil spring 44which is wound around said pivot. The backward movement of the lever islimited by the adj ustable stop-pin 45 which engages a circular notch inthe back edge of the lower arm of the lever. The upper end of the leveris pivoted with a pin 46 upon which is rotatably mounted a cam-roller47, the latter being adapted to be engaged by the cam surface 48 uponthe cam member 49 which is securely keyed to the operating shaft 5. Itwill be self evident from an inspection of Fig. 1 that as the cam member49 rotates,

the cam surface 48 will engage the roller 47 and cause the lever 42 tomake a partial rot tion in an antl-clock-wise direction, 1ts angularmotion ceasing after the roller passes beyond the point 50 and it willnot begin to recede until it is disengaged by the cam surface followingbehind the point 51. it will be noticed that this cam surface is soshaped that it does not determine the rear position of the lever 42,this being taken care of by the stop-pin 45 Thus the amount of swing ofthe lever 42 can be adjusted by changing the position of the stop-pin45,

since the limit of forward motion is always the same, being fixed by therelation of the cam surface 48 to the cam-roller 47 and the pivot 43.Upon the lower end of the lever 42 is mounted an arc-shaped track memberwhich is grooved throughout the greater portion of its length to preventthe wire from becoming accidentally displaced. The front end of thisarc-shaped track is cut away down to the bottom of the groove and for ashort distance back from the frontend of the track to form a seat forthe gripping roller 53. lhe latter consists of a circular section oftool steel having serrations or teeth out into its periphery which isrotatably mounted upon a pin 5-4 fixed into the end of the swinging arm55, which is itself pivoted upon a pin 56 fixed in the arm 42. The armis of a suilicient thickness to be bored out to accommodate a coilspring 57 which surrounds the reduced stem portion of a plunger 58, thelatter being thus forced out by the spring against thesmall angle plate59 which is secured to the edge of the feed lever 42 by the screw 60. Itwill be noticed that the pivot 56 is located some distance to the rightof an imaginary line connecting the pin 54 with the pivot 43, and thespring 57 thus tends to force the gripping roller 53 into engagementwith the cut away portion of the arc-shaped track forming the grippingseat. It is thus clear that when the feed lever moves forward in ananti-clock-wise direction, the roller 53 will grip the wire tightly andpush it forward into the cutting and forming mechanism. When the levermoves backward, however, in a clock-wise direction there is no tendencyfor the lever to grip the wire, because the spring 57 is relatively weakand allows the arm 55 to swing slightly on its pivot and thus releasethe wire as the lever moves backward. It is understood that thearcshaped track 52' forms'part of acircle having for its center thepivot 43, the distance from said center being such that the direction ofthewire as it leaves the wirestraightening mechanism is a tangent to thebottom of the groove in the track. Thus there is no tendency to bend thewire as it is being fed forward by the feed-lever which is also soplaced as to deliver the wirein a substantially straight line to thecutting mechanism.

Referring to Figs. 4 and 9, it will be seen that the stop-pin 45 issecured in an arm of the member 61 which is a flat sector-shaped pieceof steel pivoted at the rear of the main frame casting 2 and co-axiallyupon the back end of the fixed pivot 43. Substantially vertically belowthe pivot 43 I have secured in the member 61 a stud 62 which projectsrearwardly so as to be engaged by a vertical slot 63 in the upper.portion of. the small plate 64 secured to the top of the sliding plate65. The latter is slidably positioned PIS and held into engagement withthe back of the main frame casting 2 .by means of a flatheaded stud 66which projects through a slot 67. a The cutting-off mechanism -as awhole is mounted upon a rectangular block 68 which is provided with arectangular portion 69 extending through a horizontal slot 70 formed inthe main frame casting 2 and is secured to the plate 65 by a long screw71 which passes freely through the block 68 and is threaded into theplate 65. The respective surfaces of the block 68 and the front and rearof the main frame casting 2 are finished so as to form suitable slidingsurfaces. To the rear of the plate 65 is se cured a rectangular plate 72which is drilled out at its end to form a bearing for the end of theadjusting screw 73, the latter being provided with a groove 74 which isengaged by a pin 75 secured in the block 72. The adjusting screw 73 isthreaded so as to 006perate with the longitudinal threaded bore of therotatable adjusting member 76, the latter having a reduced neck portionrotatably seated within a mounting 77 and having a pair of integralcollars 78 which prevent longitudinal movement of the adjusting member76 when the latter is turned. The member 76 is furnished with a suitableknurled head 7 9 of a sufficient diameter to enable it to be easilyadjusted.

On referring to Fig. 4 it will readily be understood that on turning thehead 79, the

plate 65 will move correspondingly in ahorizontaldirection and willcarry with it away from the center of the forming machine both thecutting mechanism carried by the block 68, and also, by virtue of theslot63, it will move the stud 62 an equal amount. The stud 62 is securedin the member 61 at a distance from the center of the pivot 43 preciselyequal to one-half of the distance between said pivot 43 and the bottomof the groove in the arc-shaped track 52 on the end of the feed lever.It is thus apparent that a horizontal movement of the 'cutting mechanismaway from the center of the machine results in a backward movement ofthe arc-shaped track. The amount 'of such backward movement measured onthe circumference of the track is equal to twice the amount ofhorizontal movement of the cutting mechanism. Such horizontal adjustmentof the cutting mechanism will thus result in an increase or decrease inthe length of the wire fed by each oscillation of the lever, the changein length being equal to twice the amount of movement of the cuttingmechanism horizontally away from or toward the center of the machine.The amount of adjustment required is usually not very large, and theposition of the stud 62 consequently does not seriously depart from itsaverage position vertically below the pivot 43 and thus the ratio of twoto one between the increase of the length of the wire fed and themovement of the cutting mechanism toward or away from the center of theform'- ing mechanism is not seriously disturbed throughout the range ofadjustment of the wire fed. It should of course be understood seen thatthe block 68, which carries the cutting-off and crimping mechanism, isformed with a removable portion 80 which is located in position by adowel pin 81, this removable portion 80 carrying the cutting-01f plungerwhile the clamping plunger is mounted in the main body of the block 68.The wire is guided into the cutting-01f die by a tubular bell-mouthedcylindrical plug 82 the end of which is threaded and screwed into theblock 68. The clamping plunger 83 whose function it is to prevent thewire from being improperly pulled back when the feedlever is making itsbackward movement, is located in a vertical bore just behind theguide-block 82. The wire is gripped between the serrated lower end 84ofthe clamping plunger and the top of the opposed anvil member 85 whichis fixed in a hole bored out beneath the clamping plunger 83. The Iaround which and in the bore 87 is located a coil compression spring 88.The upper end of the latter presses'against the sleeve 89 which slidesupon theupper end of the stem 86 and is prevented from flying off bymeans of a transverse pin 90 which is securely fixed in the end of thestem 86, and its ends are long enough to ride freely in thediametrically opposed slots 91 in the sleeve. The upper end of thesleeve is furnished with a comparatively large integral head 92 and thesleeve itself is forced vertically upward by a. coil compression spring93 seated in'the enlarged bore 94 extending down into the block 68 ashort distance. The clamping plunger is operated and forced intoengagement with the wire by the horizontal arm 95 which projects fromthe side of the cutting-off plunger 96. The serrations of the lower endof the clamping plunger 83 are cut in such a direction as to cross thewire at right-angles to its length, and in order to maintain the.plunger in the proper position to keep these serrations fac-.

ed irito the removable portion and the circular disk cutter 99 which ismountedcutting off of the wire is imparted to they cutting-o5 plunger 96by a reciprocating slide member 100 which has a flat horizontal angularpro ection 101 which is engaged by a horizontal notch 102 111 the backof the cutting-off plunger. The member 100 1S normally forced upward bya coil spring 100 located in a cylindrical bore drilled verticaliycfroinits under side, the spring cooperating with a small pin 101 whichengages a small angle piece 102 secured to the side of the fixed member103 by screws 104:. The vertical shank of the reciprocatory slide 100 isrectangular in cross-section and slides in a vertical rectangularguideway formed in the back of the piece 103 which is fixed to the maincasting 2. The upper end of the shank of the plunger 100 carriessecurely fixed therein a pivot-pin 101 upon which is rotatably mounted acam roller 105, the latter being engaged by the cam surface 106 formedon the circumference of the main cam member 49. The actual cutting offof the wire takes place when th raised portion 107 of the said camsurface strikes the roller as the cam member rotates (see Fig. 1), andit will be noticed from an inspection of Fig. 8 that in normal positionthe cutter 99 is positioned a considerably greater distance above thewire than is the serrated end of the plunger 88, this resulting in thewire being securely clamped by the plunger 88 before the cutting-offknife 99 severs the wire blank. The raised portion 107 of the camsurface 106 forms substantially one-half of its circumference and is sopositioned on the exterior of the cam that the wire is securely clampedby the plunger 83 while the feed-lever is making its'backward movementso as to prevent the wire from being pulled back by the latter as itrecedes, whereas, when the feed-lever is feeding forward the wire intothe cutting-off mechanism, the plunger 83 is raised out of contact withthe wire, which thus moves for ward freely. r

The forming anvihshown best in Fig. 10, is located directly in thecenter line of the machine below the center of the shaft 5, and

comprises a cylindrical plunger 108 which slides horizontally in acylindrical, aperture in the front of the casting 2 and co-axial withthe bore of the stationary sleeve 7109 which is secured in the back ofthe casting 2by a set screw'110. The rear end of the plunger 108 isprovided with a vertical longitudinal slot 111 which forms a guidearound the vertical pin 112 screwed into the lower side of the sleeve109. The rear end of the sleeve 109 s partially closed and formsshoulder for the coil compression spring 113' which operates against theend of the plunger 108 and forces 1t outwardly into the proper formingposition, its move ment being limited by the end of the slot 111striking the pin 112. v The outer front end of the plunger 108 is formedwith a head 11 i which is so shaped as to provide a pair of parallelvertical side surfaces around which the wire is formed and an upperbevclcd surface 115 and a lower rounded surface 116. A slot 11%- is sawnhorizontally in the point of the head 11a and the upper edge of thisslot at the side adjacent to the cutting mechanism is beveled, as shownat 118, in order to guide the wire into the slot as it is fed forward.The forming plunger 119 is arranged to slide vertically in a rectangulargroove formed in the block 120 whichis secured to the front of the mainframe casting 2 and is reciprocated verti cally up and down by a camroller 121 which is rotatably mounted upon a pin 122 fixed in the upperend of plunger 119, and is engaged by a cam' track 123 formed in thefront of the cam member 419. The front face of the forming plunger 119is also slotted out to form a vertical slide-way for the driving'plunger 121 which is furnished at its sides with tongues engaginggrooves in said. slide-way. The lower end of the forming p unger 119 iscut away even with the rear face ofthe driving plunger 12 1, and thelower end of the forming plunger thus forms a fork, the arms of whichare the proper distance apart to admit the head 11a of the forming anvilas the forming plunger is depressed. The under sides or the forks of theforming plunger are grooved slightly in line with the wire so as toengage the latter and hold it in proper alinement as it is being formed,and the opposed inner faces of the forks are grooved out, as indicatedat 125 in F 3, so as to form retaining grooves for the legs of thestaple after the forming plunger has operated to form the wire intoll-shape. The swinging anvil 1216 is made out of a piece of fiat steelsubstantially the same horizontal width as the head lll of the anvilplunger, and is mounted upon a horizontal pivot 127 secured in the lowerend of the slide 128 which reciproll-JU The latter is also forcedinwardly with considerable pressure toward the head 114 bv means of theflat clock spring 134 which is secured in a slot in the bolt 135adjustably,

secured in the sheet metal guard 136, the latter being mounted upon-theblock 129 by screws 137. In order to keep the wire in its properposition at the inner end of the slot 117 so that it will be properlyengagedb-y the grooves on the under side of the lower ends of theforming forks, I have provided The rear edge of this guide-finger 138 isformed V-shaped at its lower ends'oithat the end of the wire in strikingit will'be deflected and forced into its proper position in the rear ofthe slot 117 and the front end of the head 114 is notched out in V- Ishape, as shown in Fig. 11, so as to accommodate the V-shaped lower endof the guidefinger 138. The guide-finger 138 is forced back into itsoperative position by a light clock spring 140, the lower end of whichpresses against the wide main spring 134. It will be noticed that thedriving plunger 124 is reciprocated vertically by means of a pitman 141connecting the upper end of the plunger with the crank pin 142 securedin the main cam member 49.

Describing the operation of the forming and driving mechanism, it willbe noticed that the end of the wire is fed forward the required amountinto the slot 117 and is there accurately positioned by the guide member138 in readiness to be formed. The forming plunger in its downwardmovement then engages'the wire on each side of the head 114 and directlyafterward the cutting plunger severs the blank. The forming plunger thencontinues its downward movement and forms the ends of the blankinto thelegs of the staple which embrace the sides of the head 114 and theswinging anvil member 126 and are positively guided by their position inthe opposed side grooves in the forks of the forming plunger whichcontinues its downward movement until it engages or substantiallyengages the upper surface of the book which is being stapled. Theforming plunger then remains in this position until the staple has beenpunched.

through the paper. The driving is accomplished by the driving plunger124, the

movement of he driving plunger continues, the plunger108-is finallypushed in so as to eXpose the top of the staple at the end of the slot,andthe staple is then engaged by the groove 143 at the point of'thedriving 7o plunger 124. The staple then of course commences tomovedownwardly and enters the paper, the swinging anvil member 126being-gradually pushed aside as the bevel end of the driving plungerstrikes its upper i5 cam surface until finally it is pushed completelyaside by the descending driving plunger which pass'es'beyond the pointofthe swinging anvil member. The legs of the staple are clamped beneaththe book so by means ofwell known mechanism located below the saddle 3,which need not be described. 7 t. v

- vI claim- '1. Ina wire stitching,machine,the'com- I bination of aframe having an operating shaft, a cam keyed tofsaid shaft, aspringretracted wire feed'lever pivoted to said frame and carrying-aroller adapted-to be engaged by said cam and having an arc- 9e shapedfeed-wire track with gripping means cooperating with said track, aswinging arm 7 having'its pivot substantially co-axial with saidlever-pivot and provided with a proection substantially halfway betweensaid arc-shaped feed-track and said pivot-and with a back-stop adaptedto engage said lever, forming mechanism, cutting mechanism at one sideof said forming mechanism,

and a slide carrying said cutting mechanism and adjustable to vary thedistance between said cutting mechanism and said forming mechanism andhaving a slot the sides of which tangentially engage said projection.

2. In a wire-stitching machine, wire- W5 cutting and clamping mechanismcomprising a body portion, a die fixed in said body portion, a knifeadapted to slide in said body portion and cooperate with said die, a

clamping plunger provided with transverse teeth crossing the axis of thewire, said I plunger being adapted to slide in said body portion,parallel with said knife, resilient means for raising said plunger outof contact with the wire, means for depressing said plunger and adaptedto prevent rotation thereof and a spring interposed between said plungerdepressing means and said plunger.

'3. In a wire-stitching machine, wirecutting and clamping mechanismcomprising a body portion, adie secured in said body portion, a knifecooperating with said die and adapted to slide in said body por- 7 tion,a clamping'plunger parallel with said knife and provided at its upperend with V a transverse notch, and a pin carried by the end of saidknifeandarranged to engage said notch and depress the plunger.

4. In wire-stitching mechanism, the combination of a spring-pressedhorizontally slidable forming-die having a horizontal slot at its outerend for receiving and forming the wire,-the outerend of said plungerhaving a vertically extending notch deep enough to expose the wire whenlocated against the rear wall of the slot, anda vertically swingingspringqoressed guide member adapted toenter said'notch and guide thewire into the bottom of said slot, said guide-member being beveled onthe side adjacent the Wire-feed. i

6. In a wire-stitching machine, Wirecutting and clamping mechanism,comprising a body portion, a die fixed in said body portion, a knifemember adapted to slide in said body portion and cooperate with saiddie, a clamping plunger slidable in said body portion, parallel withsaid knife member, a member actuated by said knife memher for depressingsaid plunger, a spring interposed between said body portion and saiddepressing member for raising the latter,-a spring interposed betweensaid depressing member and said plunger, and a connection between saiddepressing memher and said plunger, permitting a limited slidingmovement of the two last named parts relative to each other.

. In a wirestitching machine, Wirecutting and clamping mechanism,comprising a body portion, a die fixed in said body portion, a knifemember adapted to slide in said body portion and cooperate with saiddie, a clamping plunger slidable in said 7 body portion, parallel withsaid knife memher, a member actuated by said knife-memher for depressingsaid plunger, a spring interposed between said body portion and saiddepressing member for raising the latter, a spring interposed betweensaid depressing member and said plunger, a stem on said plunger slidablein said depressing member, and means for limitingthe sliding movement ofsald stem 1n sald depressing member.

' JOSEPH PAGLIARUL. Witnesses: o

C. A. SoANs,

EMILIE Ross.

Gopies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, 13.0.

